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Risk factors for papaverine-induced priapism.

Intracorporeal administration of papaverine hydrochloride is frequently used in the diagnosis and treatment of impotence. Priapism is the most serious potential complication of its use. The historical characteristics of 400 consecutive men receiving a standardized dose of papaverine were reviewed in an effort to determine the risk factors for prolonged erections. Younger men (p less than 0.0001) with better baseline erectile function (p less than 0.023) were more likely to have priapism. Despite use of a significantly lower dose, patients with overt neurological disease also had an increased rate of priapism. Patients with a history of coronary artery disease had a significantly lower risk of priapism (p less than 0.05). Patients with a final diagnosis of either psychogenic or neurogenic impotence had a much greater risk of priapism than those with vasculogenic impotence (p less than 0.001). The initial dosage in pharmacological erection therapy may be adjusted according to these risk factors. However, not all patients with psychogenic or neurogenic impotence had priapism and some patients with vascular disease did have priapism. Therefore, all impotent patients are potentially at risk for pharmacologically induced priapism.

Adult

Priapism associated with the sickle cell hemoglobinopathies: prevalence, natural history and sequelae.

To determine the prevalence and characteristics of priapism associated with sickle cell hemoglobinopathic conditions we interviewed and examined 52 men with sickle cell anemia, 10 with sickle C disease, 3 with sickle B(+)-thalassemia and 19 with sickle cell trait. Of the men 20 with sickle cell anemia (38%) and 1 with sickle B(+)-thalassemia (33%) reported past priapism attacks. Average patient age at onset in the sickle cell anemia patients was 19 years (range 8 to 30 years). Four men had had only 1 attack. The average number of attacks per year in the remaining patients ranged from 1 to 52. Of the patients who reported multiple attacks the average duration of a typical episode and the duration of the longest self-limiting episode was 1.6 and 7.0 hours, respectively. Six patients had experienced 1 attack that persisted for longer than 24 hours. There were no significant differences between the clinical and hematological parameters of the sickle cell anemia patients who did and did not experience priapism or of the priapism patients who had and had not experienced episodes lasting greater than 24 hours. Six patients had been hospitalized for priapism and 4 were treated with a shunting procedure. Of the latter patients 2 were impotent but there was no significant alteration in the sexual function of the other study participants.

Adolescent

Priapism in a patient treated with total parenteral nutrition.

Venous thrombosis is a common complication of total parenteral nutrition. We report a case of priapism in a 40-year-old man after administration of total parenteral nutrition for chronic idiopathic intestinal pseudo-obstruction. The patient received glucose, amino acids, and 20% fat emulsion; 12 hours after administration, the patient complained of a persistent, painful penile erection lasting 5 hours. Bilateral corpora cavernosa spongiosum shunts achieved immediate and sustained detumescence, but the patient remained impotent. There was no history of penile or pelvic trauma, hemoglobinopathy, coagulopathy, venous thrombosis, or leukemia. The medical literature describes seven other cases of priapism related to total parenteral nutrition. All of the patients received 20% fat emulsion; two patients developed priapism during the weekly infusion of fat emulsion. Among the multiple factors that can favor thrombosis and therefore priapism during total parenteral nutrition, fat infusion appears to be the most important. Three different mechanisms have been postulated: increase in blood coagulability, effects on red blood cells, and fat embolism. In this patient, platelet function was estimated in vivo by the levels of antiheparin platelet factor 4 and beta-thromboglobulin. These two parameters were both elevated before 20% lipid emulsion and were even higher after the 20% fat-emulsion infusion. Therefore, even if a direct thromboplastic effect is possible, 20% fat emulsion increases platelet activity, which was already high in our patient, and thereby favors priapism.

Adult

[The treatment of priapism].

Priapism, that is a long lasting erection in absence of sexual desire and is sometimes painful, has represented a rare occurrence until few years ago; such occurrence has become much frequent since pharmaco-erection have been used. There are still many doubts about the etiopathogenesis of priapism, that anyway happens because of a long lasting pathological discrepancy between arterious flux to penis corpora cavernosa and venous down flowing. For to establish how and when we must treat priapism, it is very important to know the causes of it, so that we can use the more properly therapy for each case. It's possible to classify the therapies in the following ways: a) extracavernosa, b) located in the corpus cavernosum. These last ones are most used and include the punction and the drainage of the blood of the cavernous body and sometime the "shunt" spongio-cavernosum. The treatment must be effected without loss of time in those rare cases of spontaneous priapism. Indeed, according to our experience, it's not necessary to be extremely supporting for intervention for priapism post pharmaco-erection. In fact the wait of 8-10 hours reduces the number of invasive treatments, without danger for the integrity of cavernous tissue.

Anesthetics

A case of priapism with ruptured intracranial aneurysm.

A man of 35 years, who had had three attacks of subarachnoid hemorrhage in the previous 3 years, was admitted to hospital with complaints of headache and priapism. There had been intermittent priapism with abnormal acceleration of sexual desire since the first attack, and erection of the penis had persisted with intolerable pain after the last attack of subarachnoid hemorrhage. A carotid angiogram revealed an aneurysm at the junction of the left internal carotid and posterior communicating arteries. Clipping of the aneurysmal neck was successfully performed. However, priapism continued for 22 days after the operation and resulted in sexual impotence. The neurological problems of priapism are discussed with special reference to a hypothalamic lesion caused by the ruptured intracranial aneurysm in this report.

Adult

Cavernospongiosum shunt in management of priapism: is it a reliable method?

The efficiency of cavernospongiosum shunt in the management of priapism was evaluated in 10 patients. Technical details such as the "Z" perineal incision and the opening followed by closure of the contralateral corpus cavernosum, at the time of corpora evacuation, can improve the local exposure and permits a more complete drainage of the corpus cavernosum, but did not improve our results when they were compared with other techniques for treatment of priapism. Penile flaccidity and preservation of sexual potency occurred in 6 (60%) and 5 (50%) patients, respectively, and no surgical complications were observed. Immediate penile flaccidity and regaining of physiologic erection were, however, not complete even in the successfully treated patients. The cavernospongiosum shunt does not seem to represent the definitive form of treating priapism. New knowledge about mechanisms involved in priapism has to be obtained, in order to improve the approach and the prognosis of this disabling condition.

Adolescent

Clozapine-associated priapism: a case report.

Priapism is a recognized side effect of antipsychotic therapy. Recently, new agents known as atypical antipsychotics, such as clozapine, have been introduced with the intent of ameliorating psychosis without the extrapyramidal side effects associated with standard antipsychotic therapy. Priapism has not been observed previously with atypical antipsychotic therapy. We report a case of veno-occlusive priapism associated with the use of clozapine. This priapistic episode was complicated by the development of recurrent post-ischemic priapism.

Adult

Priapism: evolution of management in 48 patients in a 22-year series.

The choice of an effective method to treat priapism is challenging because precise causes in the majority of patients have not been well defined. A review of 48 patients treated during a 22-year period shows evolution of a regimen of management that has yielded a high percentage of success. Idiopathic priapism and sickle cell disease accounted for 81 per cent of the subjects. An evaluation should include a medication history, a search for specific diseases, as well as a thorough physical examination to detect possible etiologic factors. The explanation for the frequent association of fever deserves further investigation. Initial therapy consisting of aspiration and irrigation, and intermittent pneumatic cuff compression should be undertaken for a trial period of 12 to 36 hours, repeating the aspiration 2 or 3 times if necessary. The failure of priapism to resolve after such treatment is an indication for a shunt operation. Patients with known etiology should be treated specifically for the primary disease and usually more conservatively for priapism. Resolution occurred in all patients and approximately 50 per cent regained sexual potency.

Adolescent

[Priapism--pathogenesis and therapy].

Priapism can occur when pathologic stimuli (e.g. lesions of the cervical spinal cord) cause prolonged erection, and when normal stimuli under pathologic circumstances (e.g. sickle cell disease, leukemia) produce prolonged erection. As any priapism eventually leads to permanent impotentia coeundi, immediate therapy is absolutely indicated. All unspecific procedures are useless and merely waste time. The priapism in connection with hematologic diseases must be countered by conservative specific therapy (sickle cell disease by blood transfusions; leukemias by cytostatic drugs). All other forms of priapism must be treated by surgery as soon as possible. The operation of choice today perineal bilateral shunt between the corpus cavernosum and the corpus spongiosum

Anemia, Sickle Cell

[Priapism induced by intracavernous injection].

We report 16 cases of priapism in 13 of 404 patients who received intracavernous injection of vasoactive drugs to induce erection. In 10 patients the complication presented following injection of papaverine and phentolamine in combination. Despite reducing the dose of both agents, one patient had another episode of priapism. One patient who had been receiving papaverine alone in increasing doses with no results, developed priapism after the first injection of the combined treatment modality and again after the dose of both drugs had been reduced. Three cases presented priapism after injection with papaverine alone. One presented the complication again after injection of a reduced dose. The patients were seen after a sustained erection of 20 hours maximum on 15 occasions and one patient was seen after a sustained erection of 36 hours.

Adult

[Priapism--clinical aspects and treatment].

After references to definition, anatomic and physiologic foundations the author deals with the pathology of priapism. A clinical systematization of the diseases occurring together with priapism according to causal points of view is no more worth being advocated. It is completely unclarified to which extent the disease actually participates in priapism. After the description of the possibilities of a conservative medical treatment to the heparin and fibrinolysis therapy it is referred to the importance of the continuous drainage of the corpora cavernosa after Grayhack and Quackels. It is reported on two patients operated according to Grayhack. Results of surgical therapy reported in publications of the last time refer to an essential improvement of the prognosis of priapism.

Adult

Factors predisposing to priapism in haemodialysis patients.

Clinical data and therapy of all male home dialysis patients of two centres were compared in order to establish predisposing factors to priapism. One centre (Frankfurt) had nine priapisms in 96 patients, whereas the other centre (Montpellier) had none in 59 patients. The only difference found were higher haematocrits in Frankfurt than in Montpellier. The highest haematocrits were found in the priapism patients. Further evaluation of the Frankfurt data showed that androgen therapy, high haematocrits and hypovolemia increase the risk of dialysis priapism. It is recommended to withdraw androgen therapy when the haematocrit is consistantly above 25%.

Adult

Priapism and multiple myeloma. Successful treatment with plasmapheresis.

Priapism was associated with multiple myeloma and hyperviscosity in a sixty-year-old black male. Plasmapheresis treatment of the hyperviscosity corrected his priapism, and chemotherapy for the underlying multiple myeloma prevented the recurrence of priapism after a chronic intermittent history of seventeen years.

Humans

Priapism associated with asplenic state.

Priapism may be primary (idiopathic) or secondary to sickle cell anemia, trauma, leukemia, drugs, venous thromboembolic diseases, and other less common disorders. This study concerns 21 patients with priapism treated during a period of ten years. Nine patients (43%) had sickle cell anemia. Of the 12 individuals (57%) classified as idiopathic, 3 (25%) had previously undergone surgical splenectomy for benign conditions. Considering the propensity for this unusual condition to develop in patients with hemoglobinopathy-induced hyposplenism, the possibility of a relationship between the asplenic state and priapism is considered.

Adult

Clozapine-induced priapism.

Priapism may be a side effect of certain medications. We present a case of priapism associated with the nonphenothiazine antipsychotic drug clozapine. The possible mechanism for the drug-induced priapism is discussed.

Adult

Idiopathic priapism in the newborn.

Priapism in children usually results directly or indirectly from an underlying cause. Secondary priapism is extremely rare in neonates and idiopathic priapism has not been described previously.

Humans

Association of priapism in phenothiazine therapy.

We present 4 patients seen in the last 5 years who had taken thioridazine (Mellaril) prior to development of priapism. One of the 4 patients suffered penile trauma while taking the phenothiazine drug and this is another possible etiologic factor in that case. No underlying urologic or hematologic disorders were present. All patients were treated by corporeal aspiration and corpus cavernosum-corpus spongiosum shunts. The mechanism of phenothiazine=induced priapism is hypothesized as being related to its peripheral adrenergic blockade, perhaps directly blocking the sympathetic impulse for detumescence, although a central nervous system effect must be considered as well. Lastly there exists the possibility of coincidence since phenothiazine treatment is becoming more common and was unrelated to the condition in an additional 6 patients with priapism seen during the same period.

Adult